One of the better known couloirs in the Queyras, this is a classic for good reason. It's quick and easy to access and features some stunning skiing. From the parking cross the bridge and follow the ski de fond track south east. Break off from the track on the right (south) towards the 2158m height. You head through a small band of trees and then continue to head up the Longet valley. You climb up though a bigger section of trees until the valley starts to opens up. After it opens up you will see the Château Renard Couloir Nord on your right, its the biggest of the couloirs there and quite obvious. Make you way to the bottom of the couloir and start to climb it. It gets a little steep near the top. From the top of the couloir you can climb to the Pic de Château Renard: or just descent from the top of the couloir itself.